HELP !!! ive got a standard 2wd sapphire cosworth that has devloped an increasingly annoying missfire. It only happens from about 4500rpm upwards. Ive changed the following: - Plugs twice(including setting plug gaps), dizzy cap, rotar arm, phase sensor, leads, ign amplifier, crank sensor, tried a different ECU, coil and amel valve but i still have the problem. When it misses its the very first plug that blacks up (nearest cambelt) Does the phase snsor and crank sensor have a certain gap and if so what is it and how do you adjust it ? Ive even looked at the wiring on the injectors to see if its corroded / broken but all seems fine. Someone please help, itsreally begining to get on my tits !!!!

PS i found this site through the RS Owners club and from what ive seen so far it looks really good![/b]